New and high quality with stable characteristics and high reliability. 1. The MOST diagnostic kit helps quickly identify fault points, whether related to the motherboard transceiver or cable connection issues. 2. The optical fiber loop allows removal or addition of a single vehicle component without affecting the car's fiber-optic network. 3. It can diagnose and locate fault points at any node in the MOST (Media Oriented Systems Transport) network. 4. Bluetooth phone modules often fail when the stereo is opened, causing intermittent sound or no sound. By disconnecting the fiber head from the phone module and connecting it to the fiber loop, the Bluetooth phone function can be deactivated, restoring normal o immediately. Fitment for compatible vehicles. Attenuation: less than 180dB/km Working temperature: -55°C to +85°C Color: Black Material: Plastic Size: 11.5cm x 2.5cm x 1.2cm (L x W x H) Core diameter: 1.0mm Finished product diameter: 2.3mm Package Contents: 1 x Male Connector, 1 x Female Connector Only the above package content is included; other products are not included. Note: Light and different displays may cause slight color variations between the item in the picture and the actual product. Measurement error allowed is +/- 1-3cm.